File Content Sniffers
File content sniffers are specified in the file /usr/gnome/etc/gnome-vfs-mime-magic. The following is an example of a file content sniffer:
0 string \x89PNG image/png
The syntax for file content sniffers is as follows:
offset_start[:offset_end] pattern_type pattern [&pattern_mask] type
Table 4–1 describes the fields in a file content sniffer.
Table 4–1 Fields in a File Content Sniffer|
Field |
Description |
|---|---|
|
offset_start |
Specifies the number of characters to ignore in the file before searching for a text pattern. |
|
pattern_type |
Specifies the type of pattern to search for. The string pattern type is the only pattern type that is supported at the time of publication of this guide. |
|
pattern |
Specifies the pattern to search for. |
|
pattern_mask |
Specifies a pattern mask, in hexadecimal format. For more information on pattern masks, see the next section. This field is optional. This field is not present in the example. |
|
type |
Specifies the MIME type to associate with files that match this entry. |
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